On several occasions while exploring the Commonwealth, a (presumably Brotherhood) Vertibird shows up out of nowhere and engages targets at a nearby location for approximately 5 minutes. Cursory googling only comes up with generic Vertibird information.
1) Are these sequences pre-determined for certain locations? Or is it a random occurrence that can happen anywhere?
2) Is there anything the player can do to influence anything?
3) Will I miss out on anything if I ignore these events and explore the area later? The Vertibird is usually flying around a location I wasn't planning on visiting during the current salvaging expedition.